<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div class="d1"></div>
    <div class="d2"></div>
    <div class="d3"></div>
    <div class="d4"></div>
    <div class="d5"></div>
    <div class="d6"></div>
    <div class="d7"></div>
    <div class="d8"></div>
    <div class="d9"></div>
    <div class="d10"></div>
    <div class="d11"></div>
    <div class="d12"></div>
    <div class="d13"></div>

</body>
<style>
    body{
        height: 3000px;
    }
    div{
        margin-bottom: 100px;
      
    }
    .d1{
        width: 100px;height: 100px;
        border-radius: 50%;
        box-shadow: 25px 25px  0 0 red;
    }
    .d2{
        width: 0;
        height: 0;
        border: 100px solid  red;
        border-radius: 50%;
        border-right:100px solid transparent;
        border-bottom:100px solid transparent;
        border-left:100px solid transparent;
    }
    .d3{
        width: 100px;
        height: 60px;
        border-radius:100%;
        /* background-color: red; */
        border-style: solid;
        border-width: 2px 2px 50px 2px;
        border-color: red;
        position: relative;
    }
    .d3:after{
        content: '';
        position: absolute;
        width: 10px;
        height: 10px;
        border: 21px solid red;
        border-radius: 100%;
        top: 50%;
        z-index: 223 !important;
    }
    .d3:before{
        content: '';
        position: absolute;
        width: 10px;
        height: 10px;
        border: 21px solid red;
        border-radius: 100%;
        top: 50%;
        left: 50%;
        z-index: 223 !important;
    }
    
    .d4{
        width: 100px;
        height: 62px;
        border-radius:100%;
        /* background-color: red; */
        border-style: solid;
        border-width: 2px 2px 43px 2px;
        border-color: red;
        position: relative;
    }
    .d4:after{
        content: '';
        position: absolute;
        width: 10px;
        height: 10px;
        border: 21px solid red;
        border-radius: 100%;
        top:49%;
        left: auto;
        z-index: 223 !important;
    }
    .d4:before{
        content: '';
        position: absolute;
        width: 10px;
        height: 10px;
        border: 19.5px solid #fff;
       background-color: red;
        border-radius: 100%;
        top: 48%;
        right: 0;
        z-index: 223 !important;
    }
    .d5{
        width: 40px;
        height: 40px;
        border-radius: 50%;
        border: 15px solid red;
        position: relative;
    }
    .d5:after{
        content: '';
         position: absolute;
        width: 40px;
        height: 10px;
        background-color: red;
       
        bottom: 0;
        right: -40px;
        transform: rotate(25deg);
    }
    .d6{
     
        width: 100px;
        height: 100px;
        border-radius: 50%;
        background-color: red;
        position: absolute;
    }
   .d6:before,
    .d6:after{
        content: '';
        position: absolute;
        border-left: 40px solid transparent;
        border-right: 40px solid transparent;
        border-bottom: 70px solid red;
    
       top: 70px;
       left: -10px;
       transform: rotate(-140deg);
    }
     .d6:before{
        left: auto;
        right: -10px;
        transform: rotate(140deg);
     }

     .d7{
        margin-top: 300px;
        margin-left: 20px;
        width: 100px;height: 50px;
        border-radius: 10px;
        
        background-color: red;
        position: relative;
     }
     .d7:after{
        content: '';
        position: absolute;
        left: -30px;
        top: 5px;
        border-width: 20px 20px 20px 20px;
        border-style: solid;
        border-color: transparent red transparent transparent;
     }
     .d8{
          width: 0;
        height: 0;
        border: 100px solid  red;
        border-radius: 50%;
        border-right:100px solid transparent;
        
     }
     .d9{
        width: 0;height: 0;
        border-top: 70px solid red;
        border-bottom: 70px solid transparent;
        border-left: 40px solid transparent;
        border-right: 40px solid transparent;
        position: relative;
     }
     .d9:after{
        content: '';
        position: absolute;
        top: -110px;
        left: -40px;
        border-bottom: 20px solid red;
        border-top: 20px solid transparent;
        border-left: 40px solid transparent;
        border-right: 40px solid transparent;
     }
     .d10{
        width: 200px;
        height: 100px;
        position: relative;
     }
     .d10:after,.d10:before{
        content: '';
        position: absolute;
        width: 60px;
        height: 60px;
        border: 20px solid red;
        border-radius: 60px 60px 60px 0;
        transform: rotate(-140deg);
     }
     .d10:before{
        right:-12px;
        transform: rotate(50deg);
     }
     .d11{
        width: 0;
        height: 0;position: relative;
        border-left: 50px solid transparent;
        border-right: 50px solid transparent;
        border-top: 100px solid red;
     }
     .d11:after{
        content: "";
         width: 0;
        height: 0;position: absolute;
        border-left: 50px solid transparent;
        border-right: 50px solid transparent;
        border-bottom: 100px solid red;
        top: -133px;
        left: -49px;
     }
     .d12{
        margin-left: 40px;
        width: 100px;
        height: 100px;
        background-color: red;
        position: relative;
     }
     .d12:after,.d12:before{
        position: absolute;
        content: '';
          width: 100px;
        height: 100px;
        background-color: red;
        transform: rotate(30deg);
     }
     .d12:before{
        transform: rotate(60deg);
     }
    .d13{
        position: relative;
        width: 0;height: 0;
        border-right: 100px solid transparent;
        border-left: 100px solid transparent;
        border-top: 70px solid red;
    }
     .d13:after,.d13:before{
        position: absolute;
        content: '';
          border-right: 100px solid transparent;
        border-left: 100px solid transparent;
        border-top: 70px solid red;
        transform: rotate(72deg);
        top: -70px;
        left: -104px;
     }
     .d13:before{
        transform: rotate(-69deg);
        top: -69px;
        left: -105px;
     }
</style>
</html>